Data transmission by quantum matter wave modulation
Data transmission by quantum matter wave modulation
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DOI：
10.1088/1367-2630/abe15f
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发表时间：
2021-02
影响因子：
3.3
通讯作者：
R. Röpke;N. Kerker;A. Stibor
中科院分区：
文献类型：
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作者：
R. Röpke;N. Kerker;A. Stibor
利用波调制的经典通信方案是我们信息时代的基础。具有光子的量子信息技术使未来能够在解码量子计算机的黎明时进行安全的数据传输。这里我们还演示了物质波也可以应用于安全的数据传输。我们的技术允许通过双棱镜干涉仪中相干电子的量子调制来传输信息。通过在分离的物质波包之间引入纵向移位的维恩滤波器在叠加状态下对数据进行编码。传输接收器是执行条纹图案的动态对比分析的延迟线检测器。我们的方法依赖于Aharonov-Bohm效应，但不移动相位。研究表明，窃听攻击通过扰乱量子态和引入退相干来终止数据传输。此外，我们还讨论了该方案在多粒子方面的安全局限性，并提出了一种能够防止主动窃听的密钥分发协议的实现。
Classical communication schemes exploiting wave modulation are the basis of our information era. Quantum information techniques with photons enable future secure data transfer in the dawn of decoding quantum computers. Here we demonstrate that also matter waves can be applied for secure data transfer. Our technique allows the transmission of a message by a quantum modulation of coherent electrons in a biprism interferometer. The data is encoded in the superposition state by a Wien filter introducing a longitudinal shift between separated matter wave packets. The transmission receiver is a delay line detector performing a dynamic contrast analysis of the fringe pattern. Our method relies on the Aharonov–Bohm effect but does not shift the phase. It is demonstrated that an eavesdropping attack will terminate the data transfer by disturbing the quantum state and introducing decoherence. Furthermore, we discuss the security limitations of the scheme due to the multi-particle aspect and propose the implementation of a key distribution protocol that can prevent active eavesdropping.